Meanwhile, Calumet Area detectives were questioning an individual in connection with Mya's death. Officials stopped short of calling the person a suspect and declined to release additional information.

Lyons found his daughter in an alley Monday night outside his South Side home. Authorities said she was stabbed several times with what appeared to be a knife.

Mya, who lived with her mother in Addison but was visiting her father at his home in the 8400 block of South Gilbert Court, went missing shortly before she was found.

"We just hope the person they're questioning is the right person," said her cousin Kesha Lyons.

"We need closure. We will not be satisfied until they say that's the person who did this to Mya."

Lyons said police have not shared any new details about the investigation or told him whom they are questioning. But he said he is confident "that this is a case that will not linger forever."

He took comfort in knowing the overgrown alley where his daughter was found had been cleared and that other children could play there safely.

"I just told Mya there were already changes made because of her," he said.

Before leaving his daughter's visitation, Lyons called on parents to enjoy the time they have with their children.

"I want everyone to take a few minutes -- call them Mya minutes -- and just look at your baby," he said. "To look at them and know how precious those moments are."